A: The knocking always speeds up.
Knock on the door.
By opening the door.
Because he knows where all the naughty girls live.
No woman wears the same attire every year.
Womb Service!
There's none. They both knock on the door, but never goes in!
Speed is relative, officer."
A: None. They have a machine that does that now.
Three. 1 to screw it in and 2 to talk about how much better Neil Peart could've done it